Threaded Patents (Class 285/357)
  • Patent number: 9448210
    Abstract: A plug unit for connecting capillary tubes includes a plug housing that has an axial borehole, a plug capillary tube that projects through the axial borehole, and a sealing element that surrounds the plug capillary tube. The front end of the plug capillary tube is sealed by an elastic and/or plastic deformation of the sealing element against the capillary tube receptacle opening of a bushing unit. A hollow cylindrical pressure piece is provided that surrounds the sealing element in an axial region facing away from the end surface of the plug capillary tube, and the pressure piece has a rearward end side that faces away from the end surface of the plug capillary tube and that can be loaded by the plug housing with an axial pressure force when the plug unit and bushing unit are connected.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: September 20, 2016
    Assignee: DIONEX SOFTRON GMBH
    Inventors: Hermann Hochgraeber, Adolf Satzinger, Daniel Buerger, Andreas Unger
  • Publication number: 20150048615
    Abstract: A seal system includes a first connector member, a second connector member, a gland structure, and a seal member. The first and second connector members include respective seal structures. The second connector member is configured for connection to the first connector member. The gland structure is defined by the first connector member and the second connector member, and is located between the first and the second seal structures. The seal member is at least partially positioned in the gland structure. The first and second seal structures are configured to deform the seal member into the gland structure in response to connection of the first connector member and the second connector member.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 19, 2015
    Inventors: Chad James Mammen, Robert Richard Brimble, Lawrence P. Heren, Kalyan Vedantam
  • Patent number: 8702130
    Abstract: A fitting for holding a tube in fluid communication with a cooperating component having a port with an internal thread of preselected pitch includes a coupling body with a longitudinal bore for receiving the tube, a grippable portion, and radially displaceable, tube clamping fingers separated by longitudinal slots. An external thread is defined on the surface of the fingers and is engageable with the internal thread of the port. The external thread has a pitch diameter similar to the pitch diameter of the internal thread and a pitch dissimilar to the pitch of the internal thread. Rotation of the fitting relative to the component to engage the threads effects relative axial movement thereof and radial displacement of the fingers into clamping engagement with the tube to hold it within the fitting. A sealing end ferrule may be included on the forward end of the coupling body.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 22, 2014
    Assignee: SIELC Technologies Corporation
    Inventor: Yury Zelechonok
  • Patent number: 8567827
    Abstract: A threaded union for tubulars used for high-pressure fluid applications includes a unitary nut supported by at least two nut retainer segments received under a top wall of the nut in an annular segment retainer groove in one of the tubulars. The nut retainer segments fully support the unitary nut. The nut retainer segments are held in the annular segment retainer groove by securing the nut retainer segments in the segment retainer groove.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 29, 2013
    Assignee: Oil States Energy Services, L.L.C.
    Inventor: Bob McGuire
  • Publication number: 20110298210
    Abstract: The invention relates to a plug unit 3 for connecting capillary tubes, especially for high-performance liquid chromatography, with a plug capillary tube 10 that projects through a hole of a plug housing 20, wherein the plug housing 20 is constructed so that it can be connected detachably to a bushing unit 5, wherein the front end of the plug capillary tube 10 projects into a capillary tube receptacle opening 53 of the bushing unit 5 when the plug unit 3 and bushing unit 5 are connected, and with its end face essentially aligned opposite a front end of a bushing capillary tube 57 or a bushing capillary tube opening 55 of the bushing unit 5 and the end face of which is butted against, and wherein the plug housing 20 applies a force, with its end face facing the end of the plug capillary tube 10, directly or indirectly on an annular sealing element 40 surrounding the plug capillary tube 10 in the region of the front end of the plug capillary tube 10 when the plug unit 3 and bushing unit 5 are connected such that
    Type: Application
    Filed: November 27, 2009
    Publication date: December 8, 2011
    Applicant: DIONEX SOFTRON GMBH
    Inventors: Hermann Hochgraeber, Adolf Satzinger
  • Patent number: 7984932
    Abstract: A threaded union for tubulars used for high-pressure fluid applications includes a unitary nut supported by at least two nut retainer segments received under a top wall of the nut in an annular segment retainer groove in one of the tubulars. The nut retainer segments fully support the unitary nut. The nut retainer segments are held in the annular segment retainer groove by limiting travel of the nut or by securing the nut retainer segments in the segment retainer groove.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: July 26, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventor: Bob McGuire
  • Patent number: 7681927
    Abstract: A fitting is provided that includes a receptacle having an inner wall forming a female member. The inner wall includes a shoulder and a land. A male member is received in the female member with a gap therebetween. The male member includes an outwardly opening groove. An O-ring is seated between the outwardly opening groove in the male member and the shoulder and the land of the receptacle to prevent removal of the male member from the receptacle. The outwardly opening groove, the shoulder and the land are configured such that compression of the O-ring is sufficient to prevent removal of the male member from the female member.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: March 23, 2010
    Assignee: Eaton Corporation
    Inventor: Darwin C. Olson
  • Publication number: 20090184517
    Abstract: It is realized to prevent foreign matter from being produced due to abrasion or cutting of a bearing surface by improving abrasion resistance of the bearing surface. It is also realized to prevent the foreign matter from entering into a tank via the opening of a mouthpiece even when it is produced. The joining structure of tank components comprises a screw joining unit for joining with the mouthpiece of a high-pressure tank, a bearing surface axially contacting the mouthpiece on the tank component side, a bearing surface on the mouthpiece side, contacting the tank component side bearing surface, a recess provided on the inner peripheral side of a portion where the tank component side bearing surface contacts the mouthpiece side bearing surface with each other and on the outer peripheral side of an opening and forming a space between the tank component and the mouthpiece, and a seal member provided in the recess for preventing foreign matter intrusion into the opening in the mouthpiece.
    Type: Application
    Filed: March 30, 2007
    Publication date: July 23, 2009
    Inventor: Toru Mukai
  • Patent number: 7322615
    Abstract: An adjustable plumbing fitting is adapted to adjust a length of connection between supply and inlet pipes, and includes a sleeve member, a collar member, and a sealing member. The sleeve member includes an annular section sleeved on and threadedly engaged with the inlet pipe, and a protrusion extending radially from an outer surface of the annular section and abutting against the supply pipe. The collar member includes a tube section sleeved on and threadedly engaged with the supply pipe, and a shoulder formed radially from an inner surface of the tube section and abutting against the protrusion to thereby interpose the protrusion between the shoulder and the supply pipe. The sealing member establishes a watertight seal between the inlet and supply pipes. The sleeve member is selectively displaced on the inlet pipe to vary a depth of insertion of the inlet pipe in the supply pipe.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: January 29, 2008
    Inventor: Chih-Chen Yen
  • Patent number: 7234731
    Abstract: A gas feed pipe connecting screw for a continuous casting nozzle which is mounted to the continuous casting nozzle formed with an axially extending ring-shaped slit concentric with a nozzle bore. The screw connects the nozzle to a gas feed pipe for blowing a gas into the slit. The screw includes a screw body having a gas feed hole formed through its central portion, a flange fitted into a mounting hole formed in a side wall of the continuous casting nozzle, a male thread engaging a first female thread formed in the mounting hole, and a second female thread formed in the gas feed hole for connection of the gas feed pipe. The flange has a detent corner engaging refractory mortar filling the mounting hole.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: June 26, 2007
    Assignee: Akechi Ceramics Kabushiki Kaisha
    Inventors: Syojiro Naito, Kazuhide Uchida
  • Patent number: 7032933
    Abstract: A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating therewith for internal connection to the first pipe end. The cooperating contact surfaces of both the inner part and the outer part are conical in shaped. Furthermore, means are arranged to prevent axial movement between the conical contact surfaces.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 25, 2006
    Assignee: AB Faluplast
    Inventor: Fredrik Hellman
  • Patent number: 6845826
    Abstract: According to one embodiment of the invention, a saver sub for a steering tool includes a main body having an external thread portion adapted to threadably couple to a box end of the steering tool and an internal thread portion adapted to threadably couple a drill bit thereto and a thread shoulder having an outside perimeter and an inside perimeter disposed around a perimeter of the main body. The thread shoulder includes a curved portion associated with the inside perimeter and a tapered portion extending from the curved portion to the outside perimeter and tapering toward the external thread portion.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: January 25, 2005
    Assignee: Noble Drilling Services Inc.
    Inventors: Dagobert Feld, Alfred Westermann
  • Patent number: 6755445
    Abstract: A fitting for coupling a pump attachment to the inlet or discharge port of a pump or compressor has an annular body with an externally threaded nipple at one end and a circular flange at the other end. An axial aperture extends between the ends through openings at the nipple and the flange. The opening at the flange is internally threaded and begins at a recess in the flange. The threaded opening is of a standard ISO rated size complementary to the threaded nipple. A coupler kit is also disclosed having components to connect the device to the pump either in a mating flange connection using a hinge clamp or a threaded connection using a hose barb having a threaded end that threads into the opening in the fitting.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: June 29, 2004
    Assignee: Thomas Industries Inc.
    Inventors: John Balamuta, Richard C. Fuksa
  • Publication number: 20040108721
    Abstract: In a three piece coupling which has bushing with internal and external threads for assembly on a threaded end of a conduit by its internal threads, a sleeve adapted to fit over a second conduit to be joined by the coupling with internal threads operable to engage said external threads of said bushing to advance the sleeve on said bushing when it is rotated and a collar sized to fit within said sleeve without restricting its rotation, the collar having internal threads for assembly on a threaded end of the second conduit to be connected with said coupling and retained in the sleeve so that the collar is advanced with the sleeve, the improvement including first sealing means operable to effect a water tight seal between the bushing and the sleeve and second sealing means operable to effect a second water tight seal between the sleeve and a conduit connect to the collar whereby the coupling joins the conduit components in a water tight joint without rotating said components.
    Type: Application
    Filed: April 23, 2003
    Publication date: June 10, 2004
    Inventor: Mark H. Olson
  • Patent number: 6712090
    Abstract: A fluid tank valve assembly of the type employed for water tanks for toilets has a tank refill valve located atop a fluid inlet supply tube. The refill valve has a lever that is raised and lowered to open and close the valve. An inverted, cup-shaped hood is positioned atop the valve and a float is located about the skirt of the hood and secured thereto by the force of friction. The float can be moved longitudinally along the skirt of the hood in order to vary the water level at which the hood bears down upon the lever arm or is lifted from the lever arm, thereby varying the water level at which the valve is actuated. The valve itself is equipped with a metering pin that is configured to reduce the likelihood of clogging in the longitudinal passage of the core of the valve diaphragm.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: March 30, 2004
    Inventor: Anthony Brandelli
  • Patent number: 6685237
    Abstract: A retrofit fitting for an externally threaded male nut that carries a face seal. The fitting is an adaptor with an internal thread to be threaded onto the male nut and an external thread to receive a female nut. The fitting carries a plurality of blades that engage matching blades on a cage engaged by the female nut. The cage is compressed against a head that bears the face seal by the female nut, so that relative rotation between the heads and face seals is prevented.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: February 3, 2004
    Inventor: Eric Robinson
  • Publication number: 20040017083
    Abstract: A fitting for coupling a pump attachment to the inlet or discharge port of a pump or compressor has an annular body with an externally threaded nipple at one end and a circular flange at the other end. An axial aperture extends between the ends through openings at the nipple and the flange. The opening at the flange is internally threaded and begins at a recess in the flange. The threaded opening is of a standard ISO rated size complementary to the threaded nipple. A coupler kit is also disclosed having components to connect the device to the pump either in a mating flange connection using a hinge clamp or a threaded connection using a hose barb having a threaded end that threads into the opening in the fitting.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 29, 2004
    Inventors: John Balamuta, Richard C. Fuksa
  • Publication number: 20030155768
    Abstract: A method of joining two pipe ends, by forming male threads on an end of a first pipe with a steep taper angle, forming matching female threads on an end of a second pipe, and applying adhesive material to the threads before twisting the pipes to fully engage the male and female threads, thereby spreading the adhesive material across adjacent load-bearing surfaces of the threads. The threads have multiple start locations for thread engagement so that the pipe ends may be twisted to achieve full engagement in less than one full relative rotation. The male and female threads are formed with a squeeze angle between matching surfaces of the threads between 0.5 and 5.0 degrees. The finished joint provides immediate leak-tightness, and immediate tensile, compressive and torsional strength and does not protrude outside of the pipe profile.
    Type: Application
    Filed: May 7, 2002
    Publication date: August 21, 2003
    Inventors: Elmont E. Hollingsworth, Joe T. Minarovic
  • Patent number: 6604763
    Abstract: An expandable threaded connection includes a first tubular member, a second tubular member and a threaded connection for coupling the tubular members that includes one or more sealing members.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: August 12, 2003
    Assignee: Shell Oil Company
    Inventors: Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, Richard Carl Haut, Robert Donald Mack, Alan B. Duell, Andrei Gregory Filippov
  • Patent number: 6530608
    Abstract: An adapter and associated apparatus for transferring gas/fluid are presented herein. The adapter is configured to connect valves and connectors of plural sizes to each other. The adapter includes an outer surface having an outer thread for connection to a tightening nut of the connector. The adapter also includes a first and second inner surfaces sized for different size valves.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: March 11, 2003
    Assignee: Coflex, S.A. De C.V.
    Inventor: Eduardo Q. Coronado
  • Patent number: 6354637
    Abstract: An adapter and associated apparatus for transferring gas/fluid are presented herein. The adapter is configured to connect valves and connectors of plural sizes to each other. The adapter includes an outer surface having an outer thread for connection to a tightening nut of the connector. The adapter also includes a first and second inner surfaces sized for different size valves.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: March 12, 2002
    Assignee: Coflex S.A. de C.V.
    Inventor: Eduardo Q. Coronado
  • Patent number: 6237969
    Abstract: There is disclosed a spirally corrugated pipe-connecting connector which enables a pipe to be quite easily fixed rapidly to a handhole or the like, and maintains a sealed condition between the inside and outside of the pipe, and enables an electric cable or the like to be passed through the pipe immediately after the pipe connecting operation is completed. The connector includes a tubular connector body 1 including a distal end-side tubular portion 11 for fixing to a wall W, an outwardly-flaring, tapering portion 12 holding a packing member, and a spiral projection portion 13 which is fitted on the holder, and is threaded inversely to a spiral on a pipe P at a pitch smaller than a pitch of the spiral on the pipe P, the tubular portion, the tapering portion and the spiral projection portion being arranged sequentially in this order from the wall W toward the exterior of the wall.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: May 29, 2001
    Assignee: Totaku Industries, Inc.
    Inventor: Hiroyuki Amatsutsu
  • Patent number: 6050609
    Abstract: A first coupling member has a peripheral facing surface with a pair of annular slots, each of a different length and width. A second coupling member has a lock ring longitudinally slidable thereon with a facing surface having a pair of annular raised locking tabs sized to correspond to the respective annular slots. A resilient annular spring mounted within the lock ring urges it toward the first coupling member so that the locking tabs engage their respective slots when the coupling is tightened to a predetermined extent during rotation in the locking direction to releasably and positively lock the coupling. An indicator stripe on the peripheral edge of the first coupling member is exposed before the locking tabs and slots are engaged. Alignment between the respective locking tabs and slots allows longitudinal movement of the lock ring so that it covers the indicator stripe.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: April 18, 2000
    Assignee: Stanley Aviation Corporation
    Inventors: Ronald W. Boscaljon, Ronald A. Rossway, David E. Jewell
  • Patent number: 5542718
    Abstract: An adjustable plumbing conduit for connecting the inlet of a flush valve body and the outlet of a control valve wherein the flush valve body inlet has interior threads and the control valve outlet has exterior threads. The adjustable plumbing conduit includes an adjustable tail having an exterior thread on a portion thereof and a tapered nose which is in contact with an interior mating surface on the control valve outlet. There is an outward projection on the adjustable tail adjacent the tapered nose, which outward projection coacts with an inwardly directed shoulder of a coupling nut which is threaded onto the exterior of the control valve inlet and thereby holds the adjustable tail to the control valve. There is a sleeve having interior and exterior threads, with the interior threads attaching the sleeve onto the exterior of the adjustable tail and the exterior threads attaching the sleeve into the flush valve threaded inlet.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: August 6, 1996
    Assignee: Sloan Valve Company
    Inventors: Jerry P. Gronwick, Leonard A. Koniewicz
  • Patent number: 5503187
    Abstract: A screw-threaded connection incorporates multiple synchronized threads, that is, one connection element has one or more sets of male threads that mates with one or more corresponding sets of female threads on the mating connection element, in customary fashion. Of course, the multiple sets of threads on the mating connection element are synchronized such that their leads are the same, and, of course, the same as the sets of mating multiple synchronized threads. This multiple synchronized thread connection has application to any fluid connector and particularly to fluid connectors in wide-variant temperature deviation, high-pressure, and/or mechanical vibration environments.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: April 2, 1996
    Inventors: John M. Simmons, Tom M. Simmons
  • Patent number: 5487569
    Abstract: An easily-assembled, heat resistant connector for releasably joining end portions of three capillary tubes for use in chromatography without interrupting flow or interfering with chromatographic results comprises a main body, and a glass insert which has first, second and third hollow legs that are connected together at a central portion, and a connector that connects each leg of the glass insert to a capillary tube. Each leg of the glass insert extends outwardly from the central portion towards an open end portion, and each leg has an inboard bore with a taper that receives and end portion of one of the capillary tubes. The taper is wider near the open end portion of the leg and narrower near the central portion. The connectors are mounted on the main body and a sealing ferrule is provided in each connector for making a seal between the capillary tubes and the legs of the glass insert.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: January 30, 1996
    Assignee: Restek Corporation
    Inventors: Paul H. Silvis, Bradley R. Rightnour
  • Patent number: 5399807
    Abstract: An explosion-proof electrical apparatus comprises two enclosures containing electrical devices. The enclosures are physically interconnected by a one-piece or two-piece hollow sleeve member which is screwed into threaded holes of the enclosures. A fitting assembly mounted in the sleeve member comprises a hollow feedthrough bushing screwed into the sleeve member, a hollow feedthrough seal member screwed into the feedthrough bushing, and a plurality of conductors extending through the feedthrough seal member and electrically connected to the electrical devices. The conductors are embedded in sealing compound which occupies the feedthrough seal member. During assembly of the fitting assembly, the feedthrough seal member is positioned within the sleeve, and the feedthrough bushing is screwed along the feedthrough seal member and is simultaneously screwed into the sleeve.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 21, 1995
    Assignee: Cooper Industries, Inc.
    Inventors: Garrett S. Yarbrough, John E. Cower, Kevin L. Browngardt, Susan M. Orzell, Robert P. Haytko, William G. Wright, Nelson L. Lansing
  • Patent number: 5314209
    Abstract: A blast joint for use with a snubbing unit includes a casing around the protective rings and means for sealing around the bottom of the rings between the tubing and the casing.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: May 24, 1994
    Assignee: Vermont American Corporation
    Inventor: Karl F. Kuhne
  • Patent number: 5303553
    Abstract: A device for connecting two tubes end-to-end. At least one of the tubes is movable longitudinally to be connected to the other tube. A screwthreaded nut joins the two tubes. The first tube has at its end an outside screwthread of diameter d1 and pitch p1. The second tube has at its end an inside screwthread of diameter d2 greater than d1 and pitch p2 different than that p1 of the first tube. One of the screwthreads is continuous and the other is discontinuous by virtue of longitudinal lands subtending an angle at the center of the tube equal to that of the screwthreaded longitudinal lands. The nut 3 has an inside first screwthread compatible with that of the first tube and an outside second screwthread compatible with that of the second tube. The device further includes a system for immobilizing the tubes against rotation and a system for rotating the nut.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: April 19, 1994
    Assignee: ACB
    Inventors: Bernard Ollivaud, Jean-Marie Lebas
  • Patent number: 5234235
    Abstract: An improved apparatus for connecting first and second conduits, which may be capillary columns, having first and second bores, respectively, to provide communication between the first and second bores for high temperature operation over wide variations in temperature. A monolithic fused quartz seating element is removably insertable into a seating chamber of a base that may be comprised of steel or other metal. The monolithic fused quartz seating element may be cylindrical and have frustoconical surfaces defining first and second receiving formations. First and second slidable followers biased by first and second quartz springs apply pressure against first and second ferrules to seal between the first and second receiving formations, and the first and second conduits, respectively.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: August 10, 1993
    Assignee: Ruska Laboratories, Inc.
    Inventor: Raymond D. Worden
  • Patent number: 5156536
    Abstract: This invention is a small hand piston type pump design to pump small quanity of flammable liquids safely from a drum. The pump has a grounding clip, and a bonding clip attached and a metal bung adapter to ensure that static build up during the pumping process is adequately grounded from not only the pump but the vessel into which the liquid is being pumped and the drum. The pump also contains a flame arrestor in the spout and a check ball and a strainer in the pickup tube to ensure that a fire within the pump will not extend into the drum and a strainer in the pickup tube to further arrest any flames. The pump is made out of carbon steel, glass and teflon so that the parts have good chemical resitance and are long lasting. The pump has a sealing device design for longjevity. This sealing device has a packing gland whose edges are beveled. It fits into a conically channel between the packing head and packing nut and when the packing nut is tighten the packing gland is forced towards the shaft.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: October 20, 1992
    Inventor: Robert G. Wilson
  • Patent number: 5152556
    Abstract: A connector system for joining a male tube to a female tube comprises an axially-split nut which extends across the region being joined. The female tube is externally threaded and mates with internal threads on one end of the axially-split nut. A shoulder formed in the other end of the axially-split nut engages a retaining ring formed on the male tube. A compressible seal ring is disposed between the end of the female tube and a second shoulder of the retaining ring. An external nut is placed over the axially-split nut to hold the entire assembly together and provide a radially compressive force on the seal ring. An axially compressive force can be provided by turning the female tube to draw the female and male tubes closer together.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: October 6, 1992
    Assignee: Kaiser Aerospace and Electronics Corporation
    Inventors: Richard Holland, H. O. Davis, Stephen Tan
  • Patent number: 5104151
    Abstract: Apparatus for connecting a conduit to an equipment opening having damaged female threads includes a body, an annular packing ring and a packing follower. The packing ring is formed of an extrudable, non-resilient packing material. The body and the packing follower are threaded to engage the female threads of the equipment opening. The packing ring is compressed and extruded into the damaged threads by relative rotation of the body and packing follower.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: April 14, 1992
    Inventor: Don L. Adams
  • Patent number: 5068919
    Abstract: A system for adjusting the size of a spacesuit is provided in which threaded rings of varying sizes are screwed into annular collars which are affixed to the section of the spacesuit whose size is to be adjusted. The rings and the collars include redundant interlocks designed to prevent inadvertent uncoupling of the components. In certain preferred embodiments, multi-start, centralizing, acme screw threads are used.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: December 3, 1991
    Assignee: Air-Lock, Incorporated
    Inventors: Robert R. MacKendrick, Mario Gonsalves
  • Patent number: 5059043
    Abstract: A blast joint for use with a snubbing unit includes a casing around the protective rings and means for sealing around the bottom of the rings between the tubing and the casing.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: October 22, 1991
    Assignee: Vermont American Corporation
    Inventor: Karl F. Kuhne
  • Patent number: 4953896
    Abstract: A structure for connecting a branch pipe in a high-pressure fuel manifold employs a nut to fasten the branch pipe to a main pipe, the nut having threaded surfaces which are simultaneously brought into thread engagement with the branch pipe and a coupling member which is secured to the main pipe in such a manner as to surround the peripheral wall thereof. Therefore, it becomes unnecessary to conduct a welding operation which has heretofore been needed to connect the joint portion of the branch pipe to the main pipe. The connecting structure satisfactorily endures ultra-high fluid pressure even under vibrations. In addition, there is no fear of fuel leaking out through the joint nor risk of the branch pipe coming off.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: September 4, 1990
    Assignee: Usui Kokusai Sangyo Kaisha Ltd.
    Inventor: Masayoshi Usui
  • Patent number: 4923225
    Abstract: A member formed of ceramic refractory material has therein an opening. A metal coupling member for attaching a metal member such as a rod or a tube, to the refractory member has an externally threaded portion extending into the opening in the refractory member. The coupling member has a head extending radially outwardly beyond the threads of the threaded portion and embedded in the refractory member. The opening in the refractory member may be internally threaded to receive the threads of the threaded portion of the coupling member.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: May 8, 1990
    Assignee: Didier-Werke AG
    Inventors: Ernst Luhrsen, Siegfried Pohl, Albert Ott, Wilhelm Parbel, Karl Baum
  • Patent number: 4900180
    Abstract: A structure for connecting a branch pipe in a high-pressure fuel manifold employs a nut to fasten the branch pipe to a main pipe, the nut having threaded surfaces which are simultaneously brought into thread engagement with a collar member fitted on the branch pipe at the neck portion contiguous with the top joint portion thereof which is brought into contact with the main pipe and with a coupling member which is secured to the main pipe in such a manner as to surround the peripheral wall thereof. Therefore, it becomes unnecessary to conduct a welding operation which has heretofore been needed to connect the joint portion of the branch pipe to the main pipe. The connecting structure satisfactorily endures ultra-high fluid pressure even under vibrations. In addition, there is no fear of fuel leaking out through the joint nor risk of the branch pipe coming off.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: February 13, 1990
    Assignee: Usui Kokusai Sangyo Kaisha Ltd.
    Inventor: Kazunori Takikawa
  • Patent number: 4798404
    Abstract: The invention relates to a pie coupling, including a connection (3), arranged to receive with sliding fit a coupling member (5) which, on forced axial displacement into or in over the connection, is intended to act on clamping and sealing means (6), for translating the compression forces generated by the axial compression into radial compression forces against a pipe or coupling piece (1) inserted into the coupling. The connection may be implemented as a coupling housing (85) having both internal and external threads. Within the threaded area the coupling member may be formed with a cylindrical recess (45) fitting a cylindrical surface (154) provided with an optional type of thread. In accordance with an alternative embodiment, the connection may be equipped with a collar coacting with gripping means (70) equipped with hooks. The clamping and sealing means (6) is retained in the coupling member by coaction between a projection (9) and a locking flange (10).
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: January 17, 1989
    Inventor: Andrzej T. Iyanicki
  • Patent number: 4756542
    Abstract: A seperable multiple-wheel cycle includes an upper coupler operatively coupling or uncoupling a left top-tube portion of a top tube secured toward a rear wheel and a right top-tube portion of a top tube secured toward a front wheel, a lower coupler operatively coupling or uncoupling a left down-tube portion of rear wheel and a right down-tube portion of a front wheel and a wire coupler also operatively coupling or uncoupling a first wire secured to a brake or clutch fixed on a rear wheel and a second wire secured to a lever fixed on a front handle bar, so that the couplers can be operated to uncouple the front-wheel part from a rear-wheel part for breakdown uses, or to couple the front part with the rear part for assembling a cycle for running purpose.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: July 12, 1988
    Inventor: Tzu-Tsan Yang
  • Patent number: 4723795
    Abstract: A connector assembly and an installation method therefor provides a fluid-tight joint between a nozzle and a column concentrically supported within the nozzle. An annular seal assembly is disposed above a flange formed on the interior of the nozzle. A spacer sleeve is threaded to the nozzle for engagement with a ledge formed on the column. A clamp assembly is mounted to the column at a fixed position and includes means for raising the column in relation to the nozzle to fix the axial position of the column. A nut threaded to the column is rotatable for forcing a drive sleeve into compressive engagement with the seal assembly to produce a fluid-tight seal between the column and the nozzle.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: February 9, 1988
    Assignee: Combustion Engineering, Inc.
    Inventor: Divakar S. Shenoy
  • Patent number: 4295666
    Abstract: A shrouded tube construction including concentric tubes is attached to a cooperating coupling in such a manner as to prevent leakage from either tube, and to provide a resilient, flexible seal that permits a degree of misalignment and permits use of lighter and less expensive material for the coupling and shorter tubes connected thereby.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: October 20, 1981
    Assignee: United Technologies Corporation
    Inventor: Donald G. Melanson
  • Patent number: 4289334
    Abstract: The present invention relates to a steel socket connection for an internally enamelled steel vessel in which presentation of bare ferrous metal to the contents of the vessel is reduced to a minimum. The socket comprises a parallel portion adjacent the vessel, an internally threaded portion remote from the vessel and a seat located between the parallel and threaded portions, said steel socket being internally enamelled except for the internally threaded portion thereof.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: September 15, 1981
    Assignee: S. W. Hart & Co. Pty. Ltd.
    Inventor: Harry J. Riley
  • Patent number: 4266538
    Abstract: A regulator for underwater diving having an improved first stage wherein the bias of the coil spring is varied by changing the relative position of the piston seat which can be readily accessed. The second stage of the regulator is capable of satisfying the human breathing demand with the use of a linkage ratio adjustment feature which coupled with the selection of the proper angle for the housing of the diaphragm permits the amplification and faithful tracking of the diver's breathing cycle. Also, exhaust means has been provided to facilitate the purging of extraneous fluids from the regulator in the most common positions of the diver. The above mentioned features, in combination, will provide a perfect match of the first and second stages of the regulator.
    Type: Grant
    Filed: May 8, 1979
    Date of Patent: May 12, 1981
    Assignee: General Diving Corporation
    Inventor: Heinz Ruchti
  • Patent number: 4181175
    Abstract: The control line exiting coupling provides radial penetration of a control line through a tubing hanger wall, with a back seat for sealing should internal pressure create a packing leak on the penetrator. The back seat further prevents withdrawal of the device through the packing and provides for withdrawing the control line tubing so the hanger may be removed from the wellhead without shearing off the control line tubing.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: January 1, 1980
    Assignee: Combustion Engineering, Inc.
    Inventors: John K. McGee, Charles D. Bridges, Robert T. Brown
  • Patent number: 3965977
    Abstract: The coupling comprises a flexible conduit, a packoff assembly, and a gland nut for compressing the packoff assembly. The conduit passes through a passage in a first member and is secured to the outlet of a second member. The nut is threaded into the passage of the first member to compress the packoff for sealing securement of the conduit to the first member even though the axes of the passage and of the outlet are not coincident. A collar is disposed on the interior end of the conduit to prevent the conduit from blowing out of the passage if the conduit should break or disconnect from the second member.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: June 29, 1976
    Assignee: McEvoy Oilfield Equipment Co.
    Inventor: John Beson